A Connecticut man was awaiting extradition to Bergen County after he was charged with engaging in sexually explicit activity with a 12 year old online, authorities said Tuesday.

Scott Brensinger, 29, of East Haven, Conn., faces charges of aggravated sexual assault and endangering the welfare of a minor, according to Bergen County Prosecutor John L. Molinelli.

“The arrest stemmed from an Internet investigation in which Brensinger, utilizing the Internet, befriended a 12 year old, and ultimately convinced and instructed the victim to engage in sexual acts via social media applications while he masturbated,” the prosecutor said in a news release.

Molinelli said Brensinger was arrested Friday in East Haven after a four-month investigation. He remained held there without bail. Prosecutors did not immediately disclose if the alleged victim was a boy or girl.